Methylsulfonylmethane (MSM) has a demonstrated high level of safety and usefulness as a ready source of dietary sulfur, an important macromineral needed for sulfur-detoxification pathways, connective tissue metabolism, antibody formation, and synthesis of other organosulfur compounds. This unique sulfur compound has no sulfur odor, is exceptionally well-tolerated, and can be used liberally as needed. Added molybdenum aids sulfur metabolism.